[janitor] dlls/wininet -Wwrite-strings cleanup

[Daniel Marmier <d.marmier@bluewin.ch>]

Fixed warnings with gcc option "-Wwrite-strings".

Index: dlls/wininet/cookie.c
===================================================================
RCS file: /home/wine/wine/dlls/wininet/cookie.c,v
retrieving revision 1.3
diff -u -r1.3 cookie.c
--- dlls/wininet/cookie.c	5 Sep 2003 23:08:28 -0000	1.3
+++ dlls/wininet/cookie.c	7 Oct 2003 20:41:03 -0000
@@ -338,7 +338,7 @@
      * It'd be nice to know what exactly is going on, M$ tracking users? Does this need
      * to be unique? Should I generate a random number here? etc.
      */
-    char *TrackingString = "MtrxTrackingID=01234567890123456789012345678901";
+    const char *TrackingString = "MtrxTrackingID=01234567890123456789012345678901";
 
     TRACE("(%s, %s, %p, %p)\n", debugstr_a(lpszUrl),debugstr_a(lpszCookieName),
 	  lpCookieData, lpdwSize);
Index: dlls/wininet/http.c
===================================================================
RCS file: /home/wine/wine/dlls/wininet/http.c,v
retrieving revision 1.42
diff -u -r1.42 http.c
--- dlls/wininet/http.c	25 Sep 2003 20:25:22 -0000	1.42
+++ dlls/wininet/http.c	7 Oct 2003 20:41:14 -0000
@@ -388,7 +388,7 @@
 static UINT HTTP_Base64( LPCSTR bin, LPSTR base64 )
 {
     UINT n = 0, x;
-    static LPSTR HTTP_Base64Enc = 
+    static LPCSTR HTTP_Base64Enc = 
         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
     while( bin[0] )
@@ -433,7 +433,8 @@
 static LPSTR HTTP_EncodeBasicAuth( LPCSTR username, LPCSTR password)
 {
     UINT len;
-    LPSTR in, out, szBasic = "Basic ";
+    LPSTR in, out;
+    LPCSTR szBasic = "Basic ";
 
     len = strlen( username ) + 1 + strlen ( password ) + 1;
     in = HeapAlloc( GetProcessHeap(), 0, len );
@@ -466,8 +467,9 @@
 {
     HTTPHEADERA hdr;
     INT index;
+    char field[] = "Proxy-Authorization";
 
-    hdr.lpszField = "Proxy-Authorization";
+    hdr.lpszField = field;
     hdr.lpszValue = HTTP_EncodeBasicAuth( username, password );
     hdr.wFlags = HDR_ISREQUEST;
     hdr.wCount = 0;
@@ -496,7 +498,8 @@
 {
     char buf[MAXHOSTNAME];
     char proxy[MAXHOSTNAME + 15]; /* 15 == "http://"; + sizeof(port#) + ":/\0" */
-    char* url, *szNul = "";
+    char* url;
+    char szNul[] = "";
     URL_COMPONENTSA UrlComponents;
 
     memset( &UrlComponents, 0, sizeof UrlComponents );
Index: dlls/wininet/internet.c
===================================================================
RCS file: /home/wine/wine/dlls/wininet/internet.c,v
retrieving revision 1.68
diff -u -r1.68 internet.c
--- dlls/wininet/internet.c	25 Sep 2003 20:25:22 -0000	1.68
+++ dlls/wininet/internet.c	7 Oct 2003 20:41:25 -0000
@@ -221,7 +221,7 @@
 {
     HKEY key;
     DWORD r, keytype, len, enabled;
-    LPSTR lpszInternetSettings =
+    LPCSTR lpszInternetSettings =
         "Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings";
 
     r = RegOpenKeyA(HKEY_CURRENT_USER, lpszInternetSettings, &key);
@@ -240,7 +240,8 @@
                               NULL, &len);
         if( (r == ERROR_SUCCESS) && len && (keytype == REG_SZ) )
         {
-            LPSTR szProxy, p, szHttp = "http=";
+            LPSTR szProxy, p;
+            LPCSTR szHttp = "http=";
 
             szProxy=HeapAlloc( GetProcessHeap(), 0, len+1 );
             RegQueryValueExA( key, "ProxyServer", NULL, &keytype,